Milestone Publications

1. Ç. K. Koç. High-Speed RSA Implementation. TR 201, RSA Laboratories, 73 pages, November 1994.   pdf
2. Ç. K. Koç. RSA Hardware Implementation. TR 801, RSA Laboratories, 30 pages, April 1996.   pdf
3. Ç. K. Koç, T. Acar, and B. S. Kaliski Jr. Analyzing and comparing Montgomery multiplication algorithms. IEEE Micro, 16(3):26-33, June 1996.   pdf   scan
4. Ç. K. Koç and T. Acar. Montgomery multiplication in GF(2^k). Designs, Codes and Cryptography, 14(1):57-69, April 1998.   pdf
5. A. F. Tenca and Ç. K. Koç. A scalable architecture for Montgomery multiplication. Cryptographic Hardware and Embedded Systems, Ç. K. Koç and C. Paar, editors, First International Workshop, Worcester, MA, USA, pages 94-108, Springer, LNCS Nr. 1717, August 12-13, 1999.   pdf
6. M. Stipcevic and Ç. K. Koç. True Random Number Generators. Open Problems in Mathematics and Computational Science, Ç. K. Koç, editor, pages 275-315, Springer, December 2014.   pdf
7. O. Acıiçmez, J. P. Seifert, and Ç. K. Koç. Predicting secret keys via branch prediction. Topics in Cryptology, The Cryptographers' Track at the RSA Conference, CT-RSA 2007, M. Abe, editor, pages 225-242, Springer, LNCS Nr. 4377, San Francisco, California, February 5-9, 2007.   pdf

Books

1. F. Rodríguez-Henríquez, N. A. Saqib, A. D. Perez, and Ç. K. Koç. Cryptographic Algorithms on Reconfigurable Hardware. Springer, 2007.   URL
2. Ç. K. Koç, editor. Cryptographic Engineering. Springer, 2009.   URL
3. Ç. K. Koç, editor. Open Problems in Mathematics and Computational Science. Springer, 2014.   URL
4. Ç. K. Koç, editor. Cyber-Physical Systems Security. Springer, 2018.   URL
5. Ç. K. Koç, F. Özdemir, and Z. Ö. Özger. Partially Homomorphic Encryption. Springer, 2021. URL

1. Z. Zhang, D. Chen, W. Dai, J. Hong, Y. H. Chan, Ç. K. Koç P. S. Y. Hung, and R. C. C. Cheung. Less is More: Latent Diffusion for Efficient IoT Side-Channel Analysis. IEEE Internet of Things Journal, to appear, 2026.   pdf
2. H. A. Öztürk, S. Yavuz, and Ç. K. Koç. A hybrid planning–learning framework for autonomous navigation with dynamic obstacles. Applied Sciences, 16(6):2961, March 2026.   pdf
3. S. Lv, D. Guan, W. Yuan, and Ç. K. Koç. SleepAC: Less dependency on manual annotations, more reliable sampling for automatic sleep staging. IEEE Journal of Biomedical and Health Informatics, 30(1):655-665, January 2026.   pdf

4. Y. Wang, X. Xue, J. Liang, D. Guan, and Ç. K. Koç. An efficient FHE-based ciphertext matrix multiplication algorithm. IEEE 24th International Conference on Trust, Security and Privacy in Computing and Communications (TrustCom), pages 1586-1591, Guiyang, China, November 14-17, 2025.   pdf
5. S. Ci, Y. Wang, S. Hu, D. Guan, and Ç. K. Koç. New algorithms for fully homomorphic matrix addition and multiplication. The Journal of Supercomputing, 81:1534, 2025.   pdf

Patents

1. Ç. K. Koç and B. Sunar. Methods and apparatus for multiplication in a Galois field GF(2^m), and encoders and decoders using same. US Patent Nr. 6,343,305. January 29, 2002.   pdf
2. Ç. K. Koç and A. F. Tenca. A scalable architecture for Montgomery multiplication. US Patent Nr. 7,046,800. May 16, 2006.   pdf
3. Ç. K. Koç and E. Savaş. Cryptographic methods and apparatus using word-wise Montgomery multiplication. US Patent Nr. 7,050,579. May 23, 2006.   pdf
4. Ç. K. Koç, T. Yanık, and E. Savaş. Methods and apparatus for incomplete modular arithmetic. US Patent Nr. 7,080,109. July 18, 2006.   pdf
5. Ç. K. Koç, A. F. Tenca, and G. Todorov. Methods and apparatus for variable radix scalable modular multiplication. US Patent Nr. 7,174,015. February 6, 2007.   pdf
6. Ç. K. Koç, E. Savaş, and A. F. Tenca. Scalable and unified multiplication methods and apparatus. US Patent Nr. 7,240,204. July 3, 2007.   pdf
7. Ç. K. Koç and S. S. Erdem. Multiplication of multi-precision numbers having a size of a power of two. US Patent Nr. 7,401,109. July 15, 2008.   pdf
8. Ç. K. Koç and S. S. Erdem. Lean multiplication of multi-precision numbers over GF(2^m). US Patent Nr. 7,447,310. November 4, 2008.   pdf
9. Ç. K. Koç. Systems and methods for providing security for computer systems. US Patent Nr. 8,090,934. January 3, 2012.   pdf
10. G. M. Hammouri, B. Sunar, Ç. K. Koç, and K. Akdemir. Computing-system identifier using software extraction of manufacturing variability. US Patent Nr. 8,694,687. April 8, 2014.   pdf
11. Ç. K. Koç and G. Saldamlı. Spectral modular arithmetic method and apparatus. US Patent Nr. 8,719,324. May 6, 2014.   pdf
12. G. Hammouri, B. Sunar, and Ç. K. Koç. Mobile phone aided operations system and method. US Patent Nr. 8,842,827. September 23, 2014.   pdf
13. M. Hubert, C. Walker, C. Minden, G. Hammouri, and Ç. K. Koç. Systems and methods for authorizing transactions via a digital device. US Patent Nr. 10,013,692. July 3, 2018.   pdf